Elementor builder shows a different thing

Hello,

The website works fine but when turning on the elementos builder, the elements disappear, as you can see bellow:

https://ibb.co/xX9FCxC

At the beginning it was impossible to turn the builder on due to an incompatibility with the plugin Gravity Forms styler for Elementor plugin. But now, once it has been disabled, the elements do not show up when turning the builder on.

Any ideas would be much appreciated.

Thank you.

The page I need help with: [log in to see the link]